Class information

Septima Vector


Classroom 7A

Required textbooks
"Oh, it's wonderful! It's my favourite subject!"
Hermione Granger[src]

Arithmancy is an elective subject offered from the third year on at Hogwarts School of Witchcraft and Wizardry.[1] During the 1990s at least, the class was taught by Professor Septima Vector[1] in Classroom 7A, on the Castle's seventh floor.[2] Homework assignments, which included writing essays, required the consultation and/or composition of complex number charts.[1] Little else is known about the class, but the study of Arithmancy has been described as "predicting the future using numbers," with "bit of numerology" as well.[3]

Arithmancy was Hermione Granger's favourite subject at Hogwarts. She once told Harry Potter it was "wonderful" when he remarked that her challenging homework looked "terrible."[1] However, one of her roommates said that, in her opinion, it was difficult, and by far preferred Care of Magical Creatures.

Another subject, Advanced Arithmancy Studies, was taught at Hogwarts, presumably to the most intelligent and brilliant students. It may have been taught by Professor Vector also, and the Advanced Arithmancy Studies classroom was located on the first floor of the Hogwarts Turris Magnus in Hogwarts Castle.

An O.W.L. in the subject was necessary to apply for a Curse Breaker position at Gringotts.[4]


Known ProfessorsEdit


Known O.W.L.sEdit

Behind the scenesEdit


Notes and referencesEdit

Professors:Septima Vector
Known Arithmancers:Bridget Wenlock
Textbooks:Numerology and Grammatica·New Theory of Numerology
Arithmancy at Hogwarts:Arithmancy (class)·Classroom 7A·Advanced Arithmancy Studies

Wizarding Education
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Schools: Beauxbatons Academy of Magic · Brazilian Wizarding School · Durmstrang Institute · Charm School · Hogwarts School of Witchcraft and Wizardry ·
Salem Witches' Institute · Mahoutokoro · Wizarding Academy of Dramatic Arts
Examinations: First year exams · Second year exams · Third year exams · Fourth year exams · Ordinary Wizarding Level · Nastily Exhausting Wizarding Test
Core classes: Astronomy · Charms · Defence Against the Dark Arts · Herbology · History of Magic · Potions · Transfiguration
Elective classes: Alchemy · Arithmancy · Care of Magical Creatures · Divination · Muggle Studies · Study of Ancient Runes
Extra-curricular classes: Apparition · Advanced Arithmancy Studies · Ancient Studies · Art · Earth magic · Flying · Frog Choir · Ghoul Studies · Hogwarts orchestra · Magical Theory · Muggle Art · Muggle Music · Music · Xylomancy

fr:Arithmancie nl:Voorspellend Rekenen (schoolvak) pl:Numerologia ru:Нумерология